Full-Stack Engineer: Build Scalable SaaS & APIs

Halian | Managed Services, Recruitment Agency & Contract Staffing; Amsterdam; On-site; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Equity

Job summary

Halian is hiring a Full Stack Engineer for a fast-growing tech startup in Amsterdam. The role combines hands-on development with technical leadership to shape strategy and drive delivery of scalable software products.

You will build APIs, lead architecture discussions, and collaborate with product and design to translate requirements into robust solutions. The position demands strong full-stack experience and a proactive, team-focused mindset.

Qualifications

• Extensive experience in full-stack software development.
• Proficiency in modern programming languages, frameworks, and web technologies.
• Experience designing RESTful APIs and integrating third-party platforms.
• Strong understanding of cloud platforms, microservices, and distributed systems.
• Expertise in database design and data modelling.
• Ability to design scalable, secure architectures and multi-tenant SaaS.
• Experience balancing hands-on development with strategic tech decisions.
• Knowledge of testing methodologies, CI/CD, DevOps, and code quality.

Responsibilities

• Build and enhance APIs, integrations, and core platform functionality.
• Develop cloud-native solutions and optimise performance, reliability, and scalability.
• Ensure applications are secure, maintainable, and aligned with best engineering practices.
• Participate in architecture decisions and contribute to the evolution of the technology stack.
• Lead design and implementation of complex software solutions and multi-tenant platforms.
• Collaborate with product, design, and business stakeholders to translate requirements into technical solutions.
• Own and influence the technical roadmap, identifying opportunities for innovation and optimisation.

Skills

Full-stack

Backend engineering

Frontend engineering

REST APIs

Cloud platforms

Microservices

Data modelling

SaaS multi-tenant

DevOps CI/CD

Testing frameworks

Code quality

Stakeholder comms

Startup experience

Serverless

Job description

Halian is hiring a Full Stack Engineer for a fast-growing tech startup in Amsterdam. The role combines hands-on development with technical leadership to shape strategy and drive delivery of scalable software products.

You will build APIs, lead architecture discussions, and collaborate with product and design to translate requirements into robust solutions. The position demands strong full-stack experience and a proactive, team-focused mindset.